CHAPTER 1: INTRODUCTION

1.6ETHERNET BRIDGING

Bridging Overview

Ethernet bridges read in packets and make decisions to filter or forward based on the destination address of the packet. The simple filter/forward decision process allows a bridge to segment traffic between two networks, keeping local traffic local. This process increases the availability of each network while still allowing traffic destined for the opposite side of the bridge to pass.

A bridge connects two networks together and allows communications between the networks without the worry of distance violations or timing considerations between the two networks. Each individual network must be within maximum distance and timing specifications however. The bridge is considered to be a node on the network and stores and forwards packets on each network. Contrasted with a repeater that repeats the signal bit by bit from one side of the network to the other, the bridge actually reads each packet, checks the packet for accuracy, then makes a decision, based on the destination address, as to whether the packet should be sent to the other network. If the other network is busy, it is the bridge's responsibility to store the packet, for a reasonable time, until the transmission can be made.

It is also the responsibility of the bridge to handle collisions. If a collision happens as the bridge is transmitting onto the second network, the bridge is responsible for the back off and retransmission process. The original sending node is not made aware of the collision. It assumes the packet has been sent correctly. If for some reason the bridge is unable to send the packet to its final destination, the original sending station, expecting a response from the device it was attempting to contact, will "time out" and, depending on the protocol, attempt retransmission.

The bridge makes decisions on whether to forward or filter a packet based on the physical location of the destination device with respect to the source device. Bridges dynamically learn the physical location of devices by logging the source addresses of each packet and the bridge port the packet was received on in a table called the Source Address Table (SAT).

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BRIM-E6 USER’S GUIDE

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Enterasys Networks BRIM-E6 manual Ethernet Bridging
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BRIM-E6 specifications

Enterasys Networks, a prominent player in the networking technology industry, has introduced the BRIM-E6, a cutting-edge solution designed to enhance enterprise network performance and security. As organizations increasingly rely on robust networking infrastructure, the BRIM-E6 stands out with its advanced features and versatile technologies.

One of the main features of the BRIM-E6 is its high throughput capability. With its powerful processing components, the device can handle multiple gigabits of data, making it ideal for environments with extensive bandwidth requirements. This feature ensures seamless connectivity and optimal performance for applications ranging from cloud computing to data-intensive tasks.

The BRIM-E6 is equipped with advanced security protocols. It incorporates built-in firewall capabilities, intrusion detection systems, and deep packet inspection to protect organizational data from unauthorized access and cyber threats. Furthermore, its comprehensive security management tools simplify policy implementation, ensuring organizations maintain control over their network without compromising on performance.

Another standout characteristic of the BRIM-E6 is its support for various networking standards. The device is designed to integrate seamlessly with existing network infrastructures, offering compatibility with both wired and wireless technologies. This adaptability allows enterprises to expand their networks efficiently, accommodating a mix of devices and ensuring optimal connectivity.

Moreover, the BRIM-E6 utilizes intelligent traffic management technologies. This includes Quality of Service (QoS) features that prioritize critical applications, ensuring they receive the necessary bandwidth during peak usage times. This capability is vital for businesses that rely on real-time data transmission, such as video conferencing and VoIP.

The BRIM-E6 also offers comprehensive monitoring and reporting capabilities. With its user-friendly interface, IT administrators can gain insights into network performance, track usage patterns, and identify potential issues before they escalate. This proactive approach to network management enhances operational efficiency and reduces downtime.

In conclusion, the Enterasys Networks BRIM-E6 emerges as a formidable solution in the realm of enterprise networking. Its combination of high throughput, robust security, flexibility in standards compatibility, intelligent traffic management, and comprehensive monitoring tools provide organizations with the reliability and performance they demand in today’s fast-paced digital landscape. As businesses continue to evolve, the BRIM-E6 positions itself as an essential component for successful network infrastructure.
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